ies 2 Proceedings of Scientific Societies. [April, 1886. 
sions of the true deltas, and, therefore, what appears to be a sub- 
marine prolongation of the margin of a continent may, in many 
cases, be merely a sedimentary deposit washed down from the 
interior. 
— Dr. Alfredo Dugés writes from Guanajuato, Mexico, that on 
the 5th of February there fell at that place eight inches of snow. 
It made a fine appearance, covering the trees full of leaves, and 
stupefiec the inhabitants, most of whom had never seen such a 
phenomenon. The thermometer fell to 4° and ne 
— Jan. 17, died in Strassburg, Professor E. Oscar Schmidt, 
who was distinguished for his researches on turbellarian worms 
and sponges, as well as several valuable general works. 
— W. T. Thiselton Dyer has succeeded Sir Joseph Hooker as 
director of Kew gardens. 
——0: 
PROCEEDINGS OF SCIENTIFIC SOCIETIES. 
Brotocicat Society or WasuincTon, Feb. 20.—Mr. Romyn 
Hitchcock, Demonstration of the resolving power of a new 1-16 
inch objective; Dr. D. E. Salmon and Dr. Th. Smith, On a new 
method of producing immunity from contagious diseases ; Dr. C 
V. Riley, A carnivorous butterfly larva; Mr. Lester F. Ward, 
species of North American grasses, 
_ > New York Acapemy oF Scrences.—l. A new electric winding 
apparatus for clocks (illustrated); II. On the need of a nor 
2 time-system for observatories, Professor John K. Rees. 
E - March 1.—Mrs. Alice D. Le Plongeon read an address on Yu- 
: catan, its ancient temples and palaces. The paper was illustrated 
with numerous lantern photographs, taken by Dr. and Madame 
te Le Plongeon, during twelve years of study and exploration 
~ ”— among the remarkable monuments and scenery of Yucatan. 
iy - Bosron Society or Narurat History, Feb. 17—Dr. W. G. 
: Farlow spoke of the collection of lichens recently presented to 
the society by Charles J. Sprague, Esq.,; and Mr. S. H: Scud er 
discussed the best methods for arranging and classifying the 
_ libraries of natural history institutions. i 
a March 3.—Dr. Thomas Dwight read a paper on the significance 
sco OE the internal structure of bone, illustrated by the stereoptico” 
= ÅPPALACHIAN Mountain CLus, Feb. 1o.—An_ ascent of the 
Matterhorn, by Melancthon M. Hurd ; The Carter-Moriah path and 
camp, by W. G. Nowell; An exploration of the Pilot range, by 
CAW. H. Peck. ia 
- Feb, 17.—Major Jed. Hotchkiss addressed the club on Mount 
: Rogers, the highest point of the Appalachians in Virginia. 
4 š < 
